The D66 includes one D28 and one D38 dry bag to create 66 liters of 100% waterproof storage. Modular packing has significant advantages over a single bag of the same volume. The two-bag D66 system makes packing and organizing your gear easier, allows for quicker access to your gear, and enables strategic separation of your gear; keeping your clean clothes separate from your wet tent. Each D-Series bag is also designed to mount directly to your bike, so you truly get three different bags in one. Use the D28 on local trails, strap on the D38 for around town, or connect the D66 for your longer adventures.

I have the D66 bags and used these travelling for over 15000 miles through more than a few showers and downpours. Never once failed me and the ease of attachment and removal to the bike is outstanding. Contents are available without removal from the bike and transporting is easy when detached. Only drawback is the outside zipped pocket could be a bit roomier to store paperwork or casha nd change. (Posted on 3/3/15)

Review by Adam

Rating

Bought this for my KTM990 instead of a rear top case (at more than 1/2 less the cost) and glad i did.
Already had the D28's which are perfect on top of my Zega Pro pannier lids. With this system i can organize all my riding/ camping gear in separate bags and not waste time digging through conventional dry bags to retrieve one item. High quality construction and the orange looks great too . (Posted on 2/21/15)

Review by cybervet

Rating

After reading a TON of reviews, I chose this bag system. First thing I noticed is that there is a massive amount of storage space. If you need more than this, along with your bike's storage, you're taking too much. These bags are very heavy weight and so are fairly stiff. This makes loading a little difficult, but I'll happily trade ease of loading for durability. The strap system that Dryspec uses is really neat and seems secure. I'm paranoid, so the Rok straps go around too for security. Probably don't need it. My only wish for something more might be to add some sort of external pocket that can be accessed easily on the road. There really is nothing other than a REALLY small and tight pocket.

Best of all, the two tone grey looks good on my bike. (Posted on 9/18/14)

Review by Adam

Rating

Bought this for my KTM990 instead of a rear top case (at more than 1/2 less the cost) and glad i did.
Already had the D28's which are perfect on top of my Zega Pro pannier lids. With this system i can organize all my riding/ camping gear in separate bags and not waste time digging through conventional dry bags to retrieve one item. High quality construction and the orange looks great too . (Posted on 8/14/14)